Northern White Ash
Ash is the original wood used to make baseball bats through the years. Ash has tremendous flexibility due to the longer fibers integrated in the wood. Many players choose ash to maintain this feel as well as achieve the spring load effect that it can create at the point of contact.
Birch is a fibrous hardwood with the perfect combination of flexibility and hardness. It is considered the best of both ash and maple has to offer. It is less dense than maple allowing for a lighter feel but has more flex like ash.
Hard Rock Maple
Maple is the hardest and most dense wood that we have. The natural fibers of this hardwood are short and tight, creating a hard hitting surface with little to no flex. This hardness causes the ball to jump off maple. Due to the moisture and density of maple it can feel heavier.